Atoma 140

[rutcrazed]

Ok guys, I did get the Atoma 140 per your recommendation. The question that I have is this. I have all the Edge Pro stones and a couple Shaptons. Is there a limit I can take the Atoma up to. I.E would it be a wise idea to use it on a Shapton 10,000 or lets say a 30,000? If I should not go that high with the 140 what should I use and at what point? Thanks

 

[Sadden]

I use the 140 up to the 1k shapton , above that I use the 1200 , it can change stone characteristics. Ifs its all you have it will be fine.

Tip: When lapping start at your finest stone , that way you don't get coarser abrasive on your finer stones.

 

[rutcrazed]

I use the 140 up to the 1k shapton , above that I use the 1200 , it can change stone characteristics. Ifs its all you have it will be fine.

Tip: When lapping start at your finest stone , that way you don't get coarser abrasive on your finer stones.

Thank you Sir, Looks like I will be buying an Atoma 1200 to go with the 140. Very nice tip about starting with finest stone first. :thumbup:

 

[Cereal_killer]

I've recently done some lapping myself and I wondered the same thing, the way it was explained to me (in PM's from some of the more knowledgable folks here) was that you didn't have to worry about putting a corse scratch pattern on your stones cause your not abrading whole surface of the stone but instead grinding down the stone's individual grit particles.

 

[Sadden]

I've recently done some lapping myself and I wondered the same thing, the way it was explained to me (in PM's from some of the more knowledgable folks here) was that you didn't have to worry about putting a corse scratch pattern on your stones cause your not abrading whole surface of the stone but instead grinding down the stone's individual grit particles.

I feel that this is worth discussing more.

On a stone such as the Nubatama 24 or 60 , you are absolutely abrading the individual particles , which is why these stones need to break in again after they have been lapped (a rare occurrence) , however on the other end of the spectrum , on something like a shapton 30k , your definitely just ploughing abrasives out of the way as opposed to abrading them.

Heres some micrographs Tom Blodgett (Jende Industries) did using Atomas , and a shapton 5k.

140 Atoma - 5k Shapton


400Atoma - 5k Shapton


600Atoma - 5K Shapton


1200 Atoma - 5k Shapton


So looking above you can see that the lapping plates finish will definitely effect the stones texture , currently I feel that this only affects feedback , however with the coarser stuff you are actually lessening the amount of abrasive presented to the blade.

 

[Revival29]

I use the 140 up to the 1k shapton , above that I use the 1200 , it can change stone characteristics. Ifs its all you have it will be fine.

Tip: When lapping start at your finest stone , that way you don't get coarser abrasive on your finer stones.

This is exactly what I do.